Intraoperative 20% albumin infusion and acute kidney injury in on-pump cardiac surgery: a focus on preoperative albumin levels

Background Albumin is widely used for volume replacement therapy during cardiopulmonary bypass (CPB) including priming fluid, despite significant controversy over its benefits. This study aimed to examine how 20% exogenous albumin affects kidney function in patients with varying preoperative albumin...

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Main Authors: Han Zhang, Shujie Yan, Luyu Bian, Jing Wang, Tianlong Wang, Gang Liu, Yuan Teng, Jian Wang, Bingyang Ji
Format: Article
Language:English
Published: Taylor & Francis Group 2025-12-01
Series:Renal Failure
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Online Access:https://www.tandfonline.com/doi/10.1080/0886022X.2025.2522327
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author Han Zhang
Shujie Yan
Luyu Bian
Jing Wang
Tianlong Wang
Gang Liu
Yuan Teng
Jian Wang
Bingyang Ji
author_facet Han Zhang
Shujie Yan
Luyu Bian
Jing Wang
Tianlong Wang
Gang Liu
Yuan Teng
Jian Wang
Bingyang Ji
author_sort Han Zhang
collection DOAJ
description Background Albumin is widely used for volume replacement therapy during cardiopulmonary bypass (CPB) including priming fluid, despite significant controversy over its benefits. This study aimed to examine how 20% exogenous albumin affects kidney function in patients with varying preoperative albumin levels.Methods We conducted this single-center, retrospective study in 28,298 adult patients undergoing on-pump cardiac surgery between 2018 and 2023. Patients were stratified according to preoperative albumin values (g/L): ≤35 (N = 1,525), 35.1–37.5 (N = 4,115), 37.6–40 (N = 7,894), and >40 (N = 14,764). Multivariate logistic regression, propensity score matching (PSM), and an inverse probability-weighting (IPW) model were applied to evaluated the impact of 20% albumin infusion on cardiac surgery-associated acute kidney injury (CSA-AKI).Results A total of 2,541 pairs were created after PSM: ≤ 35 g/L (307 pairs), 35.1–37.5 g/L (518 pairs), 37.6-40 g/L (743 pairs), and > 40 g/L (973 pairs). Patients with intraoperative 20% albumin infusion had a statistically higher risk of CSA-AKI in the group with preoperative albumin above 40 g/L (OR, 1.29; 95% CI, 1.07–1.57; p = 0.007) in the PSM model. This result remained significant after adjusting for the effects of potential confounding variables (OR, 1.38; 95% CI, 1.19–1.61; p < 0.001 for multivariate logistic regression; OR, 1.63; 95% CI, 1.55–1.72; p < 0.001 for IPW model). However, there was no significant association with Stage 2 and 3 CSA-AKI both for multivariable logistic regression and PSM.Conclusions This analysis highlights that 20% albumin infusion during on-pump cardiac surgery may increase the risk of all stages CSA-AKI in patients with preoperative albumin above 40 g/L.
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series Renal Failure
spelling doaj-art-ee7cc76fe2b34a7f999981eaf578e0252025-08-20T03:30:34ZengTaylor & Francis GroupRenal Failure0886-022X1525-60492025-12-0147110.1080/0886022X.2025.2522327Intraoperative 20% albumin infusion and acute kidney injury in on-pump cardiac surgery: a focus on preoperative albumin levelsHan Zhang0Shujie Yan1Luyu Bian2Jing Wang3Tianlong Wang4Gang Liu5Yuan Teng6Jian Wang7Bingyang Ji8Department of Cardiopulmonary Bypass, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Beijing, ChinaDepartment of Cardiopulmonary Bypass, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Beijing, ChinaDepartment of Cardiopulmonary Bypass, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Beijing, ChinaDepartment of Cardiopulmonary Bypass, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Beijing, ChinaDepartment of Cardiopulmonary Bypass, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Beijing, ChinaDepartment of Cardiopulmonary Bypass, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Beijing, ChinaDepartment of Cardiopulmonary Bypass, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Beijing, ChinaDepartment of Cardiopulmonary Bypass, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Beijing, ChinaDepartment of Cardiopulmonary Bypass, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Beijing, ChinaBackground Albumin is widely used for volume replacement therapy during cardiopulmonary bypass (CPB) including priming fluid, despite significant controversy over its benefits. This study aimed to examine how 20% exogenous albumin affects kidney function in patients with varying preoperative albumin levels.Methods We conducted this single-center, retrospective study in 28,298 adult patients undergoing on-pump cardiac surgery between 2018 and 2023. Patients were stratified according to preoperative albumin values (g/L): ≤35 (N = 1,525), 35.1–37.5 (N = 4,115), 37.6–40 (N = 7,894), and >40 (N = 14,764). Multivariate logistic regression, propensity score matching (PSM), and an inverse probability-weighting (IPW) model were applied to evaluated the impact of 20% albumin infusion on cardiac surgery-associated acute kidney injury (CSA-AKI).Results A total of 2,541 pairs were created after PSM: ≤ 35 g/L (307 pairs), 35.1–37.5 g/L (518 pairs), 37.6-40 g/L (743 pairs), and > 40 g/L (973 pairs). Patients with intraoperative 20% albumin infusion had a statistically higher risk of CSA-AKI in the group with preoperative albumin above 40 g/L (OR, 1.29; 95% CI, 1.07–1.57; p = 0.007) in the PSM model. This result remained significant after adjusting for the effects of potential confounding variables (OR, 1.38; 95% CI, 1.19–1.61; p < 0.001 for multivariate logistic regression; OR, 1.63; 95% CI, 1.55–1.72; p < 0.001 for IPW model). However, there was no significant association with Stage 2 and 3 CSA-AKI both for multivariable logistic regression and PSM.Conclusions This analysis highlights that 20% albumin infusion during on-pump cardiac surgery may increase the risk of all stages CSA-AKI in patients with preoperative albumin above 40 g/L.https://www.tandfonline.com/doi/10.1080/0886022X.2025.2522327Acute kidney injuryalbumincardiac surgerypropensity score matching
spellingShingle Han Zhang
Shujie Yan
Luyu Bian
Jing Wang
Tianlong Wang
Gang Liu
Yuan Teng
Jian Wang
Bingyang Ji
Intraoperative 20% albumin infusion and acute kidney injury in on-pump cardiac surgery: a focus on preoperative albumin levels
Renal Failure
Acute kidney injury
albumin
cardiac surgery
propensity score matching
title Intraoperative 20% albumin infusion and acute kidney injury in on-pump cardiac surgery: a focus on preoperative albumin levels
title_full Intraoperative 20% albumin infusion and acute kidney injury in on-pump cardiac surgery: a focus on preoperative albumin levels
title_fullStr Intraoperative 20% albumin infusion and acute kidney injury in on-pump cardiac surgery: a focus on preoperative albumin levels
title_full_unstemmed Intraoperative 20% albumin infusion and acute kidney injury in on-pump cardiac surgery: a focus on preoperative albumin levels
title_short Intraoperative 20% albumin infusion and acute kidney injury in on-pump cardiac surgery: a focus on preoperative albumin levels
title_sort intraoperative 20 albumin infusion and acute kidney injury in on pump cardiac surgery a focus on preoperative albumin levels
topic Acute kidney injury
albumin
cardiac surgery
propensity score matching
url https://www.tandfonline.com/doi/10.1080/0886022X.2025.2522327
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